Yes.
Go for Blender as it's free.
Or try Google Sketchup that is great for beginners, you can export to Collada, than import Collada on MED to make MDL for WED.

There are lot of tutorials over the internet.
Another advice is to first modelise the big parts or apparent shapes first. than make more little and detailled parts later.

I recommend you to have lot of photo references also to know what to model exactly also.